50 lines
1.7 KiB
Rust
50 lines
1.7 KiB
Rust
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// One-shot update check.
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//
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// `check_for_update()` runs on a background thread (joined inside an
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// async wrapper, mirroring how the rest of `crate::io` wraps blocking
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// work for iced's `Task::perform`). It hits the GitHub releases API and
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// returns `Some(latest_version)` when a newer release is available, or
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// `None` when up to date / on network failure / on parse error.
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const RELEASES_API: &str =
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"https://api.github.com/repos/HakanSeven12/H7CAD/releases/latest";
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pub const RELEASES_PAGE: &str =
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"https://github.com/HakanSeven12/H7CAD/releases/latest";
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pub async fn check_for_update() -> Option<String> {
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std::thread::spawn(fetch_latest_if_outdated)
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.join()
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.ok()
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.flatten()
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}
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fn fetch_latest_if_outdated() -> Option<String> {
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let body = ureq::AgentBuilder::new()
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.timeout(std::time::Duration::from_secs(5))
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.build()
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.get(RELEASES_API)
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.set("User-Agent", concat!("h7cad/", env!("CARGO_PKG_VERSION")))
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.set("Accept", "application/vnd.github+json")
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.call()
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.ok()?
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.into_string()
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.ok()?;
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let latest = extract_tag(&body)?
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.trim_start_matches('v')
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.to_string();
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if latest != env!("CARGO_PKG_VERSION") {
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Some(latest)
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} else {
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None
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}
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}
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fn extract_tag(body: &str) -> Option<String> {
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// Minimal substring extraction so we don't pull serde_json just for
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// one field. The GitHub releases endpoint always returns
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// `"tag_name":"v…"` near the top of the JSON object.
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const KEY: &str = "\"tag_name\":\"";
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let start = body.find(KEY)? + KEY.len();
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let end = body[start..].find('"')? + start;
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Some(body[start..end].to_string())
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}
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